Something went wrong. Try again.
What happens if I push all of nixpkgs
Something went wrong. Try again.
5.9 kB · 212 lines
Nix
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213{ lib, pythonOnBuildForHost, runCommand, writeShellScript, coreutils, gnugrep,}:let
pythonPkgs = pythonOnBuildForHost.pkgs;
### UTILITIES
# customize a package so that its store paths differs customize = pkg: pkg.overrideAttrs { some_modification = true; };
# generates minimal pyproject.toml pyprojectToml = pname: builtins.toFile "pyproject.toml" '' [project] name = "${pname}" version = "1.0.0" '';
# generates source for a python project projectSource = pname: runCommand "my-project-source" { } '' mkdir -p $out/src cp ${pyprojectToml pname} $out/pyproject.toml touch $out/src/__init__.py '';
# helper to reduce boilerplate generatePythonPackage = args: pythonPkgs.buildPythonPackage ( { version = "1.0.0"; src = runCommand "my-project-source" { } '' mkdir -p $out/src cp ${pyprojectToml args.pname} $out/pyproject.toml touch $out/src/__init__.py ''; pyproject = true; catchConflicts = true; buildInputs = [ pythonPkgs.setuptools ]; } // args );
# in order to test for a failing build, wrap it in a shell script expectFailure = build: errorMsg: lib.overrideDerivation build (old: { builder = writeShellScript "test-for-failure" '' export PATH=${coreutils}/bin:${gnugrep}/bin:$PATH ${old.builder} "$@" > ./log 2>&1 status=$? cat ./log if [ $status -eq 0 ] || ! grep -q "${errorMsg}" ./log; then echo "The build should have failed with '${errorMsg}', but it didn't" exit 1 else echo "The build failed as expected with: ${errorMsg}" mkdir -p $out fi ''; });in{
### TEST CASES
# Test case which must not trigger any conflicts. # This derivation has runtime dependencies on custom versions of multiple build tools. # This scenario is relevant for lang2nix tools which do not override the nixpkgs fix-point. # see https://github.com/NixOS/nixpkgs/issues/283695 ignores-build-time-deps = generatePythonPackage { pname = "ignores-build-time-deps"; buildInputs = [ pythonPkgs.build pythonPkgs.packaging pythonPkgs.setuptools pythonPkgs.wheel ]; propagatedBuildInputs = [ # Add customized versions of build tools as runtime deps (customize pythonPkgs.packaging) (customize pythonPkgs.setuptools) (customize pythonPkgs.wheel) ]; };
# multi-output derivation with dependency on itself must not crash cyclic-dependencies = generatePythonPackage { pname = "cyclic-dependencies"; preFixup = '' appendToVar propagatedBuildInputs "$out" ''; };
# Simplest test case that should trigger a conflict catches-simple-conflict = let # this build must fail due to conflicts package = pythonPkgs.buildPythonPackage rec { pname = "catches-simple-conflict"; version = "0.0.0"; src = projectSource pname; pyproject = true; catchConflicts = true; buildInputs = [ pythonPkgs.setuptools ]; # depend on two different versions of packaging # (an actual runtime dependency conflict) propagatedBuildInputs = [ pythonPkgs.packaging (customize pythonPkgs.packaging) ]; }; in expectFailure package "Found duplicated packages in closure for dependency 'packaging'";
/* More complex test case with a transitive conflict
Test sets up this dependency tree:
toplevel ├── dep1 │ └── leaf └── dep2 └── leaf (customized version -> conflicting) */ catches-transitive-conflict = let # package depending on both dependency1 and dependency2 toplevel = generatePythonPackage { pname = "catches-transitive-conflict"; propagatedBuildInputs = [ dep1 dep2 ]; }; # dep1 package depending on leaf dep1 = generatePythonPackage { pname = "dependency1"; propagatedBuildInputs = [ leaf ]; }; # dep2 package depending on conflicting version of leaf dep2 = generatePythonPackage { pname = "dependency2"; propagatedBuildInputs = [ (customize leaf) ]; }; # some leaf package leaf = generatePythonPackage { pname = "leaf"; }; in expectFailure toplevel "Found duplicated packages in closure for dependency 'leaf'";
/* Transitive conflict with multiple dependency chains leading to the conflicting package.
Test sets up this dependency tree:
toplevel ├── dep1 │ └── leaf ├── dep2 │ └── leaf └── dep3 └── leaf (customized version -> conflicting) */ catches-conflict-multiple-chains = let # package depending on dependency1, dependency2 and dependency3 toplevel = generatePythonPackage { pname = "catches-conflict-multiple-chains"; propagatedBuildInputs = [ dep1 dep2 dep3 ]; }; # dep1 package depending on leaf dep1 = generatePythonPackage { pname = "dependency1"; propagatedBuildInputs = [ leaf ]; }; # dep2 package depending on leaf dep2 = generatePythonPackage { pname = "dependency2"; propagatedBuildInputs = [ leaf ]; }; # dep3 package depending on conflicting version of leaf dep3 = generatePythonPackage { pname = "dependency3"; propagatedBuildInputs = [ (customize leaf) ]; }; # some leaf package leaf = generatePythonPackage { pname = "leaf"; }; in expectFailure toplevel "Found duplicated packages in closure for dependency 'leaf'";}